douyuepi6485
douyuepi6485
2015-12-05 15:27
浏览 31
已采纳

如何在第一天的日期再次从1开始自动增量和重启?

I want make auto increment by using php but when date start from 01 or my table is empty it's number restart to 1 again this is my number :

$day = date('t');
$month = date('n');
$years = date('Y');
$num = 001/$month/$years

and I was convert a number

$cut = (int)substr($num,2,1);

and then I dont know how to increase the number and go back to 1 again when date start from 01

thankyou for answering and spent your time for answer my newbie post

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1条回答 默认 最新

  • dongyan7876
    dongyan7876 2015-12-05 15:59
    已采纳

    Try PHP explode :-

    <?php
    $num = '001/$month/$years';
    $num=explode("/",$num);
    $cut = (int)$num[0];
    echo ++$cut;
    ?>
    
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